Dibenzohexacene: Stabilization Through Additional Clar Sextets.

Authors :: Rüdiger EC
Müller M
Koser S
Rominger F
Freudenberg J
Bunz UHF
Source :: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2018 Jan 24; Vol. 24 (5), pp. 1036-1040. Date of Electronic Publication: 2017 Nov 02.
Publication Year :: 2018
Abstract: Triphenylene units stabilize hexacenes as dibenzohexacenes. The hexacenes formed by a statistical Yamamoto coupling of dibromobenzene with dibromo-TIPS-pentacene or, alternatively, Stille coupling with dimethyldibenzostannole. UV/Vis spectroscopy and quantum chemical calculations show that despite the double benzannulation, the species have hexacene-type character, as evidenced by their redshifted absorption characteristics. The charge carrier mobility of dibenzohexacene 1 a was determined up to 0.2 cm <superscript>2</superscript> /(Vs).<br /> (© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)